12 APEX_LDAP

You can use APEX_LDAP to perform various operations related to Lightweight Directory Access Protocol (LDAP) authentication.

Topics:

AUTHENTICATE Function
GET_ALL_USER_ATTRIBUTES Procedure
GET_USER_ATTRIBUTES Procedure
IS_MEMBER Function
MEMBER_OF Function
MEMBER_OF2 Function

AUTHENTICATE Function

The AUTHENTICATE function returns a boolean true if the user name and password can be used to perform a SIMPLE_BIND_S, call using the provided search base, host, and port.

Syntax

APEX_LDAP.AUTHENTICATE(
    p_username     IN VARCHAR2 DEFAULT NULL,
    p_password     IN VARCHAR2 DEFAULT NULL,
    p_search_base  IN VARCHAR2,
    p_host         IN VARCHAR2,
    p_port         IN VARCHAR2 DEFAULT 389,
    p_use_ssl      IN VARCHAR2 DEFAULT 'N')
RETURN BOOLEAN;

Parameters

Table 12-1 describes the parameters available in the AUTHENTICATE function.

Table 12-1 AUTHENTICATE Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_password`	Password for `p_username`.
`p_search_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL (default).

Example

The following example demostrates how to use the APEX_LDAP.AUTHENTICATE function to verify user credentials against an LDAP Server.

IF APEX_LDAP.AUTHENTICATE(
    p_username =>'firstname.lastname',
    p_password =>'abcdef',
    p_search_base => 'cn=user,l=amer,dc=my_company,dc=com',
    p_host => 'our_ldap_sever.my_company.com',
    p_port => 389) THEN
    dbms_output.put_line('authenticated');
ELSE
    dbms_output.put_line('authentication failed');
END IF;

GET_ALL_USER_ATTRIBUTES Procedure

The GET_ALL_USER_ATTRIBUTES procedure returns two OUT arrays of user_attribute names and values for the user name designated by p_username (with password if required) using the provided auth base, host, and port.

Syntax

APEX_LDAP.GET_ALL_USER_ATTRIBUTES(
    p_username          IN VARCHAR2 DEFAULT NULL,
    p_pass              IN VARCHAR2 DEFAULT NULL,
    p_auth_base         IN VARCHAR2 DEFAULT NULL,
    p_host              IN VARCHAR2,
    p_port              IN VARCHAR2 DEFAULT 389,
    p_use_ssl           IN VARCHAR2 DEFAULT 'N',
    p_attributes        OUT wwv_flow_global.vc_arr2,
    p_attribute_values  OUT wwv_flow_global.vc_arr2);

Parameters

Table 12-2 describes the parameters for the GET_ALL_USER_ATTRIBUTES procedure.

Table 12-2 GET_ALL_USER_ATTRIBUTES Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_pass`	Password for `p_username`.
`p_auth_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL (default).
`p_attributes`	An array of attribute names returned.
`p_attribute_values`	An array of values returned for each corresponding attribute name returned in p_attributes.

Example

The following example demonstrates how to use the APEX_LDAP.GET_ALL_USER_ATTRIBUTES procedure to retrieve all attribute value's associated to a user.

DECLARE
    L_ATTRIBUTES       wwv_flow_global.vc_arr2;
    L_ATTRIBUTE_VALUES wwv_flow_global.vc_arr2;
BEGIN
    APEX_LDAP.GET_ALL_USER_ATTRIBUTES(
        p_username         => 'firstname.lastname',
        p_pass             => 'abcdef',
        p_auth_base        => 'cn=user,l=amer,dc=my_company,dc=com',
        p_host             => 'our_ldap_sever.my_company.com',
        p_port             => '389',
        p_attributes       => L_ATTRIBUTES,
        p_attribute_values => L_ATTRIBUTE_VALUES);
 
     FOR i IN L_ATTRIBUTES.FIRST..L_ATTRIBUTES.LAST LOOP
         htp.p('attribute name: '||L_ATTRIBUTES(i));
         htp.p('attribute value: '||L_ATTRIBUTE_VALUES(i));
     END LOOP;
END;

GET_USER_ATTRIBUTES Procedure

The GET_USER_ATTRIBUTES procedure returns an OUT array of user_attribute values for the user name designated by p_username (with password if required) corresponding to the attribute names passed in p_attributes using the provided auth base, host, and port.

Syntax

APEX_LDAP.GET_USER_ATTRIBUTES(
    p_username          IN VARCHAR2 DEFAULT NULL,
    p_pass              IN VARCHAR2 DEFAULT NULL,
    p_auth_base         IN VARCHAR2,
    p_host              IN VARCHAR2,
    p_port              IN VARCHAR2 DEFAULT 389,
    p_use_ssl           IN VARCHAR2 DEFAULT 'N',
    p_attributes        IN  wwv_flow_global.vc_arr2,
    p_attribute_values  OUT wwv_flow_global.vc_arr2);

Parameters

Table 12-3 describes the parameters available in the GET_USER_ATTRIBUTES procedure.

Table 12-3 GET_USER_ATTRIBUTES Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_pass`	Password for `p_username`.
`p_auth_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL (default).
`p_attributes`	An array of attribute names for which values are to be returned.
`p_attribute_values`	An array of values returned for each corresponding attribute name in `p_attributes`.

Example

The following example demonstrates how to use the APEX_LDAP.GET_USER_ATTRIBUTES procedure to retrieve a specific attribute value associated to a user.

DECLARE
    L_ATTRIBUTES wwv_flow_global.vc_arr2;
    L_ATTRIBUTE_VALUES wwv_flow_global.vc_arr2;
BEGIN
    L_ATTRIBUTES(1) := 'xxxxxxxxxx'; /* name of the employee number attribute */
    APEX_LDAP.GET_USER_ATTRIBUTES(
        p_username => 'firstname.lastname',
        p_pass => NULL,
        p_auth_base => 'cn=user,l=amer,dc=my_company,dc=com',
        p_host => 'our_ldap_sever.my_company.com',
        p_port => '389',
        p_attributes => L_ATTRIBUTES,
        p_attribute_values => L_ATTRIBUTE_VALUES);
END;

IS_MEMBER Function

The IS_MEMBER function returns a boolean true if the user named by p_username (with password if required) is a member of the group specified by the p_group and p_group_base parameters using the provided auth base, host, and port.

Syntax

APEX_LDAP.IS_MEMBER(
    p_username     IN VARCHAR2,
    p_pass         IN VARCHAR2 DEFAULT NULL,
    p_auth_base    IN VARCHAR2,
    p_host         IN VARCHAR2,
    p_port         IN VARCHAR2 DEFAULT 389,
    p_use_ssl      IN VARCHAR2 DEFAULT 'N',
    p_group        IN VARCHAR2,
    p_group_base   IN VARCHAR2)
RETURN BOOLEAN;

Parameters

Table 12-4 describes the parameters available in the IS_MEMBER function.

Table 12-4 IS_MEMBER Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_pass`	Password for `p_username`.
`p_auth_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL.
`p_group`	Name of the group to be search for membership.
`p_group_base`	The base from which the search should be started.

Example

The following example demonstrates how to use the APEX_LDAP.IS_MEMBER function to verify whether a user is a member of a group against an LDAP server.

DECLARE
    L_VAL boolean;
BEGIN
    L_VAL := APEX_LDAP.IS_MEMBER(
        p_username =>'firstname.lastname',
        p_pass =>'abcdef',
        p_auth_base => 'cn=user,l=amer,dc=my_company,dc=com',
        p_host => 'our_ldap_sever.my_company.com',
        p_port => 389,
        p_group => 'group_name',
        p_group_base => 'group_base');
    IF L_VAL THEN
        htp.p('Is a member.');
    ELSE
        htp.p('Not a member.');
    END IF;
END;

MEMBER_OF Function

The MEMBER_OF function returns an array of groups the user name designated by p_username (with password if required) belongs to, using the provided auth base, host, and port.

Syntax

APEX_LDAP.MEMBER_OF(
    p_username     IN VARCHAR2 DEFAULT NULL,
    p_pass         IN VARCHAR2 DEFAULT NULL,
    p_auth_base    IN VARCHAR2,
    p_host         IN VARCHAR2,
    p_port         IN VARCHAR2 DEFAULT 389,
    p_use_ssl      IN VARCHAR2 DEFAULT 'N')
RETURN wwv_flow_global.vc_arr2;

Parameters

Table 12-5 describes the parameters available in the MEMBER_OF function.

Table 12-5 MEMBER_OF Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_pass`	Password for `p_username`.
`p_auth_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL (default).

Example

The following example demonstrates how to use the APEX_LDAP.MEMBER_OF function to retrieve all the groups designated by the specified username.

DECLARE
    L_MEMBERSHIP       wwv_flow_global.vc_arr2;
BEGIN
    L_MEMBERSHIP := APEX_LDAP.MEMBER_OF(
        p_username         => 'firstname.lastname',
        p_pass             => 'abcdef',
        p_auth_base        => 'cn=user,l=amer,dc=my_company,dc=com',
        p_host             => 'our_ldap_sever.my_company.com',
        p_port             => '389');
    FOR i IN L_MEMBERSHIP.FIRST..L_MEMBERSHIP.LAST LOOP
        htp.p('Member of: '||L_MEMBERSHIP(i));
    END LOOP;
END;

MEMBER_OF2 Function

The MEMBER_OF2 function returns a VARCHAR2 colon delimited list of groups the user name designated by p_username (with password if required) belongs to, using the provided auth base, host, and port.

Syntax

APEX_LDAP.MEMBER_OF2(
    p_username     IN VARCHAR2 DEFAULT NULL,
    p_pass         IN VARCHAR2 DEFAULT NULL,
    p_auth_base    IN VARCHAR2,
    p_host         IN VARCHAR2,
    p_port         IN VARCHAR2 DEFAULT 389,
    p_use_ssl      IN VARCHAR2 DEFAULT 'N')
RETURN VARCHAR2;

Parameters

Table 12-6 describes the parameters available in the MEMBER_OF2 function.

Table 12-6 MEMBER_OF2 Parameters

Parameter	Description
`p_username`	Login name of the user.
`p_pass`	Password for `p_username`.
`p_auth_base`	LDAP search base, for example, `dc=users,dc=my,dc=org`.
`p_host`	LDAP server host name.
`p_port`	LDAP server port number.
`p_use_ssl`	Set to 'Y' to use SSL in bind to LDAP server. Set to 'A' to use SSL with one way authentication (requires LDAP server certificate configured in an Oracle wallet). Set to 'N' to not use SSL (default).

Example

The following example demonstrates how to use the APEX_LDAP.MEMBER_OF2 function to retreive all the groups designated by the specified username.

DECLARE
    L_VAL varchar2(4000);
BEGIN
    L_VAL := APEX_LDAP.MEMBER_OF2(
        p_username => 'firstname.lastname',
        p_pass => 'abcdef',
        p_auth_base => 'cn=user,l=amer,dc=my_company,dc=com',
        p_host => 'our_ldap_sever.my_company.com',
        p_port => 389);
    htp.p('Is Member of:'||L_VAL);
END;